Despite her aggressive reveal, there is something about that perfectly tanned torso and poppers in place of buttons that screams: “SET UP!”

After the spectacle, single Zac – who is bouncing back from several stints in rehab for cocaine addiction – was quick to start following Rita on Twitter, gushing: “Thanks for such a bold move. I don’t know if I could’ve done that on my own.”

Reets, who looked stunning in a svelte black gown with a plunging neckline, proceeded to post FIVE pics of the steamy display on her Instagram page, writing: “Oh yeah this happened... it’s OK, you guys can thank me later!”

Well, we have to thank her

A backstage onlooker tells us: “There was a lot of chemistry between the two and Zac seemed really taken with Rita – following her around like a lovesick puppy.”

Meanwhile, over in the Colorado Desert, California, at Coachella, superstar DJ Calvin was hanging out with petite singer Jhene Aiko.

He later wrote on his Instagram: “Yoooo height difference is incredible @jheneaiko great to meet you!”